<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>

</head>
<body>
        <div id="app">
                <table>
                  <!-- <mycomponet1></mycomponet1> -->
                  <tr is="mycomponet1"></tr>
                </table>
              </div>
              <script>
                Vue.component('mycomponet1', {
                  template: `
                    <tr>mycomponet1</tr>
                  `
                })
            
                //根组件
                var app = new Vue({
                  el: '#app'
                })
              </script>
</body>
</html>